Home / 420,001.20-579,601.17-247,919.40

Finding the Fourth Proportional to 420,001.20, 579,601.17 and 247,919.40

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Solution

The fourth proportional to 420,001.20, 579,601.17 and 247,919.40 is: 342,128.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,001.20 : 579,601.17 = 247,919.40 : x
  2. Step 2: Convert to fraction form
    420,001.20/579,601.17 = 247,919.40/x
  3. Step 3: Cross multiply
    420,001.20x = 579,601.17 × 247,919.40
  4. Step 4: Simplify right side
    420,001.20x = 143,694,374,305.70
  5. Step 5: Solve for x
    x = 143,694,374,305.70/420,001.20
  6. Step 6: Final answer
    x = 342,128.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.